1. Tim and Carlos are building a ramp for performing skateboard stunts, as shown in the accompanying diagram. The ramp is 12.6 m long and 4.2 m high. What is the measure of the
angle, x, that the ramp makes with the ground, to the nearest whole number of a degree? *
12.6m
4.2m

Consider two metallic rods mounted on insulated supports. one is neutral, the other positively charged. you bring the two rods close to each, but without contact, and briefly ground the the neutral rod by touching it with your hand. show answer correct answer what would be resulting charge (if any) on the initially neutral rod

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_

By what primary heat transfer mechanism does the sun warm the earth?